What happens during a play when R1 does not execute a legal slide into second base?

In the context of baseball rules, when a runner, such as R1, does not execute a legal slide into second base, it can result in serious consequences for the integrity of the game. If the runner slides illegally — for instance, by not making contact with the ground while sliding, or by making contact with a defender in a way deemed to be unsafe or obstructive — this behavior is typically viewed as intentional and a violation of the rules designed to protect all players involved.

The rule is in place to ensure player safety and maintain fair play. Hence, this action warrants an automatic ejection of the player who failed to slide legally. Such ruling helps uphold the established safety protocols and promotes sportsmanship on the field, serving as a deterrent against reckless and potentially harmful behavior during a critical situation.

The other potential outcomes, such as allowing the play to continue without penalty or awarding a base to another player, do not appropriately address the severity of the illegal slide and would undermine the principles maintaining order and safety in the game.